Hot-water or steam boiler.



A. V, STEALY.

HOT WATER OR STEAM BOILER.

APPLICATION FILED HAYS, 1912.

1,088,474.. Patented Feb. 24, 1914,

2\SHEET8-BHEET 1.

, .2 aw J A. v. STEALY. HOT WATER 0E STEAM BOILER.

APPLIOATIOH FILED MAYQ, 1912.

1,088,474. Patented Feb. 24,1914,

a sums-sum 2.

unfit vi i- Ji ii i ts AIVIASA V. STEALY, F ELKI-IART, INDIANA.

HOT--WATER OR STEAM BOILER.

t eatre-Q Specificationof Letters Patent.

Patented liio. 24ft, Tia-id.

Application filed May 9, 1912. Serial No. 698,236.

To all whom it may concern Be it known that l, Arman V. STEALY, a citizen of the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented a new and useful Hotater or Steam Boiler, of which the following is specification.

My invention relates to boilers in which Water is heated for the purpose of heating buildings and the objects of my improvement are, first, to have rapid circulation of water through the boiler; second. to make the heating area as large as possible: third, to arrange the tire pot so that the area of the grate can be varied; fourth, to avoid horizontal movement of the water through the boiler: fifth, to use the hot products of combustion, for preheating the water, sixth to provide automatic means whereby the products of combustion will be shunted to the chimney each time the fire door is opened: seventh, to provide automatic means whereby a. flue connecting the ash pit and chimney is opened each time the ash pit door opened: eighth, to make a cheap durable and eflicient boiler and other features to become apparent from the description to follow.

In boilers used to heat water it is very desirable to have the greatest e'l'liciency with the least possible waste of fuel. to avoid dust and smoke in the room when feeding in fuel or removing ashes, to preheat or gradually heat the water, to have the water moving upward during the time it is being heated, to be able to change the size of the grate without changing the size of other parts, to have a large heating area and to have the water circulate through the boiler rapidly. 1 boiler in accordance with my invention contains all these desirable features, and comprises a rectangular trough like water jacket having its two sides flaring outward and up ward so that a grate placed between these side walls can be of any desired width, the

larger being placed higher in the troughlike jacket than the smaller. Suitable intake pipes are connected between the bottom oi. the water jacket and a header and suitable outlet pipes which are arranged in a novel manner are connected between the top of the water jacket and a header.

To describe my invention so that others versed in the art to which it pertains can make and use the vsame I have illustrated it on the accompanying two sheets of drawings l r l l l l l forming part of this which Figure 1, is a Vertical cross sectional View taken on line 1 1 of Fig. 2., and Fig. 2 is a vertical longitudinal section taken on line 2--2 of Fig. 1, partly broken away for the purpose of better illustration.

Similar reference characters refer to simila r parts throughout both views. I

A trough-like water jacket 3, made of sheet metal, serves as the receptacle for the tire box and ash pit the iiat bottom i of the water jacket being also the bottom oi? the ash pit and the two upright sides of the water jacket: serving as the side walls of the ash-pit and tire box. The inner and outer sheets of the water jacket 3 are secured together by suitable tie bolts 6. The upright side walls 5 are inclined outward so that the distance between their lower ed 1 is considerahle smaller than the distalu'e between their upper edges, which enables varying the size of the grate 7 which spans the space between the walls 5 at such a: height abo e the bottom 4- to suit the size or width oi the grate; i. 0., a small size gra to would be placed down close to the bottom l; and a large size grate would be securwl in position a considspeciiication in erable distance above the bottom l. The size of the grate, of course determines. to some extent, the quantity of. fuel winsumcd by the furnace. To aid the combustion 'l'lidsidc walls of the [ire box are lined with the brick 8.

As clearly shown in l i of the water jacket 3, is ri idly secured to the front plate 9 whica extei ls overlhe entire front end of the boiler, its lower end resting in the wall 10, and its upper end secured a. the upper header 11. The rear end of the water jacket 3 is rigidly sccurmil to the rear plate 12, which extends over the entire rear end oi the boiler. lower end resting on the outer side walls 13 as seen at it. 1, and its upper end secured to the upp lheader ll.

Communionting with the interior of the bottom l is a system of pipes or tubes 15 anrauged staggered to admit the passage of hot gases therebetweeu, having their lower ends connnunientirely connected with the lower hcrulcr 1G. The position of tlui-iat tubes '15 is best seen in Fig. 2, which is. starting at the bottom, downward a t; right aoglesdo said bottom, thence back and dowuwa d on an in cliue and finally down substa cally to the lower header l6.

2, the front end anally vorti- Secured to the inside sheet of each side wall near the top thereof are two rows .of tubes which extend a short distance at right angles to their respective sheets, thence upward on an incline toward the center of the firebox and finallyupward substantially vertically to the lower side of the header 11 to which the said tubes are secured. These two rows of tubes are ranged staggered at each end where they are secured. in the sheet metal plates but for the greater portion of their length they lie in the same plane and are arranged close te et-her so as to resent a corru ated sur-v face to the hot gases above the firebox, the back orfupper side of said corrugated surface formed by the tubes 17 is covered by fire-brick 18 which has its lower ends resting on the top of the walls of the water jacket 3. Secured to the bottom plate of the upper header 11 between the double rows of pipes 17 are the upper ends of a center row of tubes 19 which ends are alternately staggered so as to enable securing said tubes to the bottom plate of the npper header ll still have the tubes so close together i that they will substantially touch throughout their greater length where they are formed to lie in the same vertical plane and serve as a central vertical partition extending longitudinally over the center of the grate grate the tubes 19, forming said central partition, are alternately-bent toward either side and have their lower ends secured. to the opposing plates of the upright sidewalls 5 justbelow the tubes 1. Thus it .ill be seen that the water within the boiler is free to circulate from the lower header 16 upward. through tubes 15, upward through the jacket 3, thence upward through tubes 1'? and 1-9 and finally into the upper header lit. ,From the upper header the water is conducted "to the heating radiators not through the pipes connected to t e top of thenpper header 11, and 1S returned the radiators through pipes to lower header '16.. The 'es'frorn' the lire-box, pass upthe tubes 19 where they exreline anden either side of -e they, extend vertically ontact wf the inclined and thence pass upward between jacket hertz-out: 1

L7 v". 4- U18 Omit '4'. At a suitable distance above the It will be noted that the gases emitted from the lire-box come in contact with the uppermost partof the water containing apparatus whenhottest, viz., the tubes 17 and 19 and the upper header 11 just before the water passes through the pipes 20 to" effect o'f'preheat-ing the water, heating thewater gradually and utilizing substantially all the heat carried by the gases of coin bastion. 1

By having the ash pit formed in'the lower part of the water jacket- 3 a considerable amount of heat is transferred from the ash pit to the water in the jacket which heat,-

in the ordinary construction of furnaces is wasted.

The outer walls 18 at the top terminate in curved portion 23 which extend to the sides of the upper header 11 and extend lon gitudinally from the-front plate 9 to the rear plate 12. -The outer side of the frontand back plates 9 and 12 are covered with fire brick 52 1 or other materialwhich is a nonconductor otheat, to prevent the radiation ofheat.

I prefer placing a central longitudinal partition 25 below the bottom 4 of the water 7 jacket 3 to equalize the quantity of hot gases of combustion, which pass down on either I side of the water jacket 3. Suitable transverse partition 26 is placed directly below the rear plate 12 to confine the hot-gases to .the spaces between the tubes 15. 1 e.

The the box is provided with a the ash pit is provided with a door 28 and a cleanout door 29 is provided for the open,- ing 30' leading to the pit below the water jacket 3, which is also used as a check on the fire. l

A blow cit pipe 31' provided with astop cool: 32 is secured to the bottom of the lower header l6. 3 4

It will be noted that the construction of the fines for the hot of combustion are soarranged that all dust and soot will lodge in LAB lowermost'pit and on no surface of any {water containing com artment, so that there is no waste of heat on account oi soot or dust. t v I j A time 83 forms communication between part of the fire box and the nmney-QQ to provid eadirect draft. The line is nornnllyclosed'by adamper 34L,

eh is weighted to normally rest in a closed ition. i -:-l prevent any srnokecr dustf'passing out ugh the firing door 27 when it is opened door 27,

e whenever LGMA'M to feed fuel into the fire box arrange means whereby the damper 34 in flue 33 is opened automatically -each time the door 27 is opened: to the end a vertical rod. is se- 5 cured to rotate with the pivot or pintle of he door 27. The upper end oi? the rod provided with av crank arm 36, which is connected by means of a rod Sleuth one arm of the bell crank lever 38 pivoted at 39; the othe' arm of tho'bell crank lever 38 is con nected by means of a rod '10 to the damper 3st in such manner that the damper will be opened when the door 27 op med. Tlnis the draft will. be shunted through the flue to the chimney whenever the door 27 is opened and the smoke and dust will be drawn out through the ehinniey.

.ikS shown the lower end of rod e1 0 slot-ted to provide lost motion between the door 2? and the damper 3% so that the damper 34. can be opened without the door 27 being opened.

Another flue ell is connected between the rear end of the ash pit and the chimney 22' 25 to draw out all dust and ash from the ash pit when the door 28 is open to remove the ash from the pit. I prefer to provide means 'whereby the damper 42 in pipe 4-1. autoniatically opci'icd every time the door :28 is 80 opened, and to this end the damper -22 isweighted to normally rest in a. closed position and is connected by, rod l3 to one win of the bell crank lever 44 pivoted at 45': the other arm of the bell crank lever is connected by red to the crank arm 46 secured on the upper end of rod 47 which secured to rotate with the pivot or pintle on which the door 28 sit ings. The parts so-connccted and arrangedv that the damper 42 will be moved to an open position whenever the door 28 is opened and the damper 42 will be moved to a. closed position whenever the door 28is closed. Thus the draft will be shunted through flue all into the chin'iney 932,

the door 28 is opened, and carry all dust and ash-into the chimney.

I. desire to have it understo d that the size form and arrangements of some of the parts can be radically varied \vitl'iout'in the 50 least departing-from the scope of the inven tion as described above and hereinafter claimed.

Having thus fully described my in vcntion what I (.litilJtZlS-llfiW and desire to secure by Letters Patent oi the United State is 1. in a device of the class described, a trough-like water jacket, a grate, ash pit and fire bon arranged in said water jacket a suitable .l'icader below said water jacket connected by a plurality of tubes to the "water "acket and a sui-tal'ile heade above the said water jacket connected by a plurality of tubes to the sides oi the Water acket.

2. In a device of the class dcscribwl, a troughiike jacket cmitaining a grate, ash

l l l i I trough like vater jacket. containing a grate,

ash pit and fire box, suitable outlet pipes C(mllOCllt-Ll. to the upper part of the sides of said water jacketand suitable inlet pipes connected to the lower part oi. said water jacket. i

4-. In a device of the class described, a trough like Water jacket, containing a grate, ash pi t and fire box, a Fuiitable header above said Water jacket, a row oil pipes connected to the top of either side of said trough like I acket extending upward in two converging inclined planes and having their upper ends connected to said header.

5. In a device oithe class described, a 'troug ht like water jacket, (.Olltttlillllg a grate, ash pit, and a tire bo a suitable header above said water jacket, a row of pipes connecicd to the top of either side of said trough like jacket e1:tending upward in two coin verging inclined planes having their upper ends connected to said header and suitable layers of the brick on. said inclined pipes extending up from the top edge of either side of the trough like jacket to a. short distance below said header.

in a. device of the class described, a trough lik: water jacket, con tai'ning a grate, an ash pit and lire box, a suitable header above said water jacket, :1. row of pipes cou-v nected to the top ol either side of said trough like water jacket extending up therefrom in two converging inclined planes in ving their upper ends connected to said header, and a second row of pipes connected to the top of either side of said trough like water jacket said rows oi. pipes cxtei'uling toward one another in two slightly inclined convergingplanes to the center of the jacket and thence vertically to said. header to which they are connected. I

i'. in :1 device of the class described, a trough like water jacket containing a grate, ash pit and the box a suitable header below said ivatcr jacket, a plurality of pipes form int:- communication between said jacket and said header and suitable outlet pipes connected to the upper end of the sides of said jacket.

8. In a de ice oi" the class: described, a trough like water jacket containing" a grate, .Hll pit and live box, a suitable hcade above said X'Hljl' jacket and a row of pipes connecting each side oi said trough like water jacket with. said header, the pipes in each of shit-able Water jacket, :1.

3 assen said rows lying close together throughout the greater part ct their iength to present a corrugated surface to the hot gases and the eXt-reinitiesof said pip being bent to have their ends ai'ran 'ed stag ered whet Z1 CI they are secured to the "Eac wt and to the header.

same plane to th header to '1 a i Li Wail over the center of the fre he." and spaced pipes over' the ahoie fire box.

10. In a device of the clh feed a fire box in connection Wito suitabie header 'eeiow connected by e piuarlity o Water jacket and a suitah l abo e said Water jacket connected by a pi'ui'aiizy of tubes to the opposite sides oi the Wate" jacket.

11. In a device of the'eiass ihed, c editable Water jacket, a. grate, )it and fire box in coiinection with said wa 1e 'acket, a suitable header above said i jacket connected by a plurality of,t1 i to tie upper part of the sides if the a jaei i front and back plates ii (intact \Yitii said water jacket and. en or: to the header and fines for hot gases arranged that toe hot gases Wii contact with the Water contaiiiiiu; apparatus Whi ie passing in a (iO'WDWfiTd course In a device of the suitahie voter jacket i grate ash pit and fire he i said W teijacket, said Water jack t 1 3 JUU above ea described, a

inclined planes having their 11 per end connected to said header and suitable layers of fire brick on said inclined pipes extending up from the top edge of either side of the said water jacket to a short distance below said .Jipes connected to the tee aid water acket, said rows l W ding toward one another in two shgiiti lined converging; planes to a point above center of the fire hot; and thence verticaiiv to said header to which they are device of the class ccsciiied, a tater acket having two side" and cent 111mg a gi' te af'i p1 and fire 302:, a

L k 2* i l v.- I i suitacie header above "aid water acket an row of pipes connecting'each side of saic water jacket with said header, the pipes it each of said TQYS lying close togetl'iei throughout the tei' part to present a corrugated su ace to the he gases and the extremities of T bent to lave their ends ai'iai e "where they are secured to 1th the header.

in a device 1 suitable water jacket ha deg two sides and containing a gra'c, ash pit ano iire box, suitable header abo e achet and two i'ows of pipes between said Wat one connected to e the pipes 01 each rom their res v OI or jacket 1 in f inciined c011 :heiice ii] in the header 'rni ver cal Wail ov r the Center of we be}; and spaced pipes 'iii; 

